The disease caused by Salmonella typhi differs from that caused by other Salmonella spp. because it
A) penetrates the intestinal cells to spread to the blood.
B) produces a powerful enterotoxin.
C) produces a lethal cytotoxin that causes cell death.
D) causes acute mesenteric lymphadenitis.
A
Health Professions
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The state of psychological or physical dependence , or both, which results from chronic, periodic or continuous use of drugs.
A. addiction. B. habituation. C. dependence. D. none of these.
Health Professions
Which of the following techniques allows a pulse oximeter to determine the amount of hemoglo-bin in a blood sample?
a. Tonometry c. Fluorescent tech-nology b. Spectrophotometry d. Optical plethys-mography
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